Until man duplicates a blade of grass, nature can laugh at his so called scientific knowledge.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!

Opportunity is missed by most people because it is dressed in overalls and looks like work.

Each time you fail, you have eliminated another wrong option.

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

It is remarkable to what lengths people will go to avoid thought.

Genius? Nothing! Sticking to it is the genius! Any other bright-minded fellow can accomplish just as much if he will stick like hell and remember nothing that's any good works by itself. You've got to make the damn thing work!...I failed my way to success.